Movable platform construction



July 18, 1933.

J. RcE l,9l8,427

IOVABLE PLATFORM CONSTRUCTION Filed Aug. 17, 1931 fra/6721 07" %aga/z Fzc Patented July 18, l933 ovaBLEr ATFom ooNsrrRuerion*' u Application filed August 1931.` i Serial Mam.

I in ventionrelates to platform :con 'structi'ons similar to' that shownin my prior` r Pate-nt No. 1,68794 on Movablefloor for ele i It is *also a purpose of thisvi nventio'n to Vator cars.

` It is the maing object ofdthis nvention to,` provide 'a onstruction whereby when a per-' son'steps off the entrance threshold they: at

'once step 'on the floating platform. i In this connection, "my `invention contem plates'the provision Offa. floating sill exten'di] ing outside the frame whichcarries the flating platform whereby any part available for a person to step upon from the entran'ce 'threshold is movable with the floatng p'latform or floor. This eliminates any danger of the weight of the person' not being applied to the movable platform and insures 'safer operation. e

provide a novel means of mounting the mov able sill whereby toca-use itlto follow the movable floor orplatform.

` A' further 'object ofthe' inventionis to provide a novelcombination between the door guide or track and the floatng sill and floor whereby the guide is held stationary while u the sill 'and floor move together.

Iflwill describethe preferred form of invention by reference to the: accompanying u\ drawing wherein i i e p Fig. lis a horizontal cross section through an elevator car embodying my invention; u v Fig. 2 is a vertical section throughthe movable floor and framework Construction;

and i u i I Fig. 3 is an enlarged detailed View of" the sill mounting. i

Referring now having a gate 6, a threshold 7,.and a' floor 8. This floor is of the movable type such as is shown in my prior patent. Thatiis to say,

` the floor 8 is carried: by means of' a framework!) which framework has fixed thereto hearing portions 13 and l4, and of "course suitable counterbalance' mechani'sm such for example asjtheweight 15 on the bell crank `device. e i w possiblebetween the edgeofjthe floating J 'platform and the edge of sillof the entranc'e t [door so that when the entrance jdoor is closed v there' is no possibility of aperson s foot .be-l

66 ]p`rovide sill member c17which as shown ex tends across the .front ?of-the frame 9 and is u pr v d w dg .8s e tly c a Lfrom the floor 8, to 'allow foroperation of, I f 70 cupp h sill 17 ,t'I connect' it to the frane 20` o the i .floor 8 ,forexamplein'the manner shownin "Figg, that is, by means. offa Serie ofhracketsi v suchj as indicatcdfifl 2 15 These, brackets; of e course, mstlbestrong enough and rigi d* u rigidly in posi'- the-'door guide therebetween;`

I i :for anelevator car or similar In order to have the" least` amountjoi space? ingofithe floating platform,` preferably Nowin orderto insure the enough to maintain the sill 17 Animportant'feature Ofwthe inventioncis hasa station'ary, track while the sill and `plat- 4 p i form move. I provide an opening 22`, and` theguide nember23 on the door 6 extends; down into the trackQL which is stationary on 'v frame 9. This' permits the sill and flojorito the mounting of ..the sill so that the `door16 move Without afi'ectingtthedoor operation.

in detail to the drawing, "l thetmck the numeral 5 indicates the usual'elevator, car

From the above description, n s believed to be clearthat I have provided asimple v fioating sill construction wherebya sill piece UNITED sTA 'rEs ip A ;1 6 m ay b e used to hold the A. i 'i ti on shown in Fig. 2. Itis clear, zo f course," that i if weight is :added to p the .floor 8` as by" people stepping thereon, thisfioor will be moved downwardly and tothelef t as shown' in Fig. 2 Inmy` 'prior patent, thefunc'tion of this movement is tdoprate `the control i mechanism A moving With the moving floor of the platform a Construction may be readily supported in such position as to provide an adequa-te 'protection against danger at the point wh ere the movable floor edge passes over the supporting frame.

' Having thus described onespecific form of my invention, whatI' claim as new and desire to secure 'by Letters Pagtent is:

1. r In a platform construction, a framework ioo I and a fioor carred thereby and movable later ally thereon, means for novably carrying said flooron said framework, a sll for sadfloor outside said framework, a door on said framework between the sill and floor, and means connectng said sill and floor Wherebythey are movable together relatve to said frame- Work.

2. In a platform Construction EL frame- Work &nde floor carl-ie& there'by and no'vable lateraHy thereon, means for movab'ly Carry'- ing said floor on said framework, esllofor said floor outside said framework, saidfrme- Work having a closure support on &the 'jtop'f' thereof between the sill and floor, and means passing through said framework connectr'g together 'relative to saidfframework.

3. Inez platform "constru-ctron, ;a 'frame- 'worked-d having a lel'ge port'onepaced from sad floor but substantally level therewith,

wherebv they are IIOVLjblG together relatre to 'sei-d framework,

. -In ka' platform eonstruotion, a" ran le orkjand &floor turned thereby, means for..

` work, 'sill for fsad floor outside said frane Work and having a edge prtjon spced'from nd 'means passing through said framework onneotngsad sill and floor Whereby they ,are .movable together relative to said frame- A v work.

531111 platform cas' n', a Work and a floor oarredthereby 'and movable i f laterally th'ereon, means' for V movgbl Carry&

v Work, a sill; fo

ing said floor on said framework, a sill for said floor outside ad framework, said' sill and floor being spaced &part over the framework, and means below said floor rgdly connecting said. sill andvfloor Whereby they are movable together relative to *s aflrame-- 1 work. .Zr r 4 v 6. .In a' platform Construction, &framemears for movably oarfy g said floorfo'n'ii framework, a `s`11` fr said floor' Whereby theyere movabletogether relativo to sad `framework Wthoutinterferng;

id, floor &bore said treme Work, `and means connectng Saudi 5111 and:

floor wherebythey are noyable together rela tivo to'sadiframeworlg &floor above said floor having guide track on said framework, and guide means-011' :sa-dfdoor {projeqtrg through the planerof said adjsll to said track 

